Autoinjector having an outer packaging and a needle sheath removing means

Abstract

An autoinjector device for delivering a dose of medicament including a syringe including a needle wherein, prior to use of the device, the needle is substantially covered by a needle sheath (107). The autoinjector further includes a housing (112) in which said syringe is located, an outer packaging in which said housing is located, where the outer packaging comprising a front packaging (101) part and a rear packaging part. The autoinjector also includes needle sheath removing means (103) associated with said front packaging part (101), wherein, prior to use of the device, said front and rear packaging parts cooperate together to entirely enclose said housing, syringe and needle sheath, and wherein, upon axial separation of said front and rear packaging parts, said needle sheath removing means is capable of causing axial separation of said needle sheath from said needle so as to remove said needle sheath therefrom.

Description

[0001]This invention relates to the field of autoinjectors for the administration of liquid medication, for example, adrenaline (epinephrine) for the treatment of anaphylaxis.BACKGROUND[0002]An autoinjector is an automatic injection device designed to facilitate automated delivery of a dose of medicament to a patient through a hypodermic needle, the injection usually being administered by the patient themselves. An autoinjector works, for example, by delivering an injection automatically upon actuation by the patient pressing a button, moving a lever or part of a housing etc. This is in contrast to a conventional manual syringe where the patient himself needs to directly depress a plunger into a barrel containing medicament in order to effect the injection. The terms “autoinjector” and “injection device” are used interchangeably in the following description.[0003]Examples of autoinjectors are described in WO2003 / 099358 (Seedlings Life Science Ventures LLC) and WO01 / 93926 (Mayo Found...

AI Technical Summary

Benefits of technology

[0019]wherein, during axial separation of said front packaging part and said rear packaging part up to said axial separation threshold, said cap insert is radially engagable with said housing to prevent relative axial displacement between said housing and said cap insert, and said portion of said front packaging part is capable of preventing radial disengagement of the cap insert from the housing;

Problems solved by technology

Owing to the different internal construction and operation of an ASI autoinjector, the user may find it less easy to use than the more familiar devices such as the EPIPEN or ANAPEN epinephrine autoinjectors, that he / she may already be practised at using.

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